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HER:  Clwyd Powys 1625 (None)
NMR:  SO 05 SE 9 (305826)
SM:  RD123(POW)
NGR:  SO 07275 54830
X:  307275  Y:  254830  (OSGB36)
Small inland promontory fort located on a SE-facing spur promontory high in the Carneddau above the River Wye and its tributary the River Edw above Builth Wells. Steep or very steep surrounding slopes, moderate to NW. Measures c. 75m by 75m internally, with internal area 0.35ha, and 120m N-S by 80m externally with area c. 0.96ha. Defences cut off the promontory at a saddle from the adjoining upland on the N and NW, with natural slopes defending the remainder. Defined by curving inner bank, to 5m high externally, and external ditch with counterscarp, and inner quarry hollow. Possible stone revetment revealed. Gap of c. 20m to outer bank to 1.7m high externally and ditch. Entrance through outer bank on NW side, then route runs parallel with inner bank to enter interior through inner bank on W. Inner entrance faced by possible hut platform. Possible c. 10 hut platforms in interior, all c. 5m diameter. Moorland rough grazing. Some erosion of banks. On 1st Ed. OS map (1889). Minimal investigations, undated.
Citizen Science:  ✗
Reliability of Data:  Confirmed
Reliability of Interpretation:  Confirmed
X:  -373777  Y:  6833439  (EPSG: 3857)
Longitude:  -3.357694724764084  Latitude:  52.18386322419174  (EPSG:4326)
Country:  Wales
Current County or Unitary Authority:  Powys
Historic County:  Radnorshire
Current Parish/Community/Council/Townland:  Glascwm
Some erosion of banks.
| Extant   | ✓ |
| Cropmark   | ✗ |
| Likely Destroyed   | ✗ |
Moorland rough grazing and bracken.
| Woodland   | ✗ |
| Commercial Forestry Plantation   | ✗ |
| Parkland   | ✗ |
| Pasture (Grazing)   | ✓ |
| Arable   | ✗ |
| Scrub/Bracken   | ✓ |
| Bare Outcrop   | ✗ |
| Heather/Moorland   | ✓ |
| Heath   | ✗ |
| Built-up   | ✗ |
| Coastal Grassland   | ✗ |
| Other   | ✗ |
Small inland promontory fort located high in the Carneddau above the River Wye and its tributary the River Edw above Builth Wells.
| Contour Fort   | ✗ |
| Partial Contour Fort   | ✗ |
| Promontory Fort   | ✓ |
| Hillslope Fort   | ✗ |
| Level Terrain Fort   | ✗ |
| Marsh Fort   | ✗ |
| Multiple Enclosure Fort   | ✗ |
| Hilltop   | ✗ |
| Coastal Promontory   | ✗ |
| Inland Promontory   | ✓ |
| Valley Bottom   | ✗ |
| Knoll/Hillock/Outcrop   | ✗ |
| Ridge   | ✗ |
| Cliff/Plateau-edge/Scarp   | ✗ |
| Hillslope   | ✗ |
| Lowland   | ✗ |
| Spur   | ✓ |
Dominant Topographic Feature:  Spur
| North   | ✗ |
| Northeast   | ✗ |
| East   | ✗ |
| Southeast   | ✓ |
| South   | ✗ |
| Southwest   | ✗ |
| West   | ✗ |
| Northwest   | ✗ |
| Level   | ✗ |
Altitude:  390.0m
N/A
None
Reliability:  D - None
| Pre 1200BC   | ✗ |
| 1200BC - 800BC   | ✗ |
| 800BC - 400BC   | ✗ |
| 400BC - AD50   | ✗ |
| AD50 - AD400   | ✗ |
| AD400 - AD 800   | ✗ |
| Post AD800   | ✗ |
| Unknown   | ✓ |
| Pre Hillfort:   | None |
| Post Hillfort:   | None |
On 1st Ed. OS map (1889). CPAT defended enclosures survey 2006.
| 1st Identified Map Depiction (1889):   | OS map. |
| Other (2006):   | CPAT defended enclosures survey. |
Possible c. 9 hut platforms in interior, all c. 5m diameter. Inner entrance also faced by possible hut platform.
Stream 0.25km outside fort.
| None   | ✓ |
| Spring   | ✗ |
| Stream   | ✗ |
| Pool   | ✗ |
| Flush   | ✗ |
| Well   | ✗ |
| Other   | ✗ |
Possible c. 9 hut platforms in interior, all c. 5m diameter. Inner entrance also faced by possible hut platform.
| No Known Features   | ✗ |
| Round Stone Structures   | ✗ |
| Rectangular Stone Structures   | ✗ |
| Curvilinear Platforms   | ✓ |
| Other Roundhouse Evidence   | ✗ |
| Pits   | ✗ |
| Quarry Hollows   | ✗ |
| Other   | ✗ |
None
| No Known Excavation   | ✓ |
| Pits   | ✗ |
| Postholes   | ✗ |
| Roundhouses   | ✗ |
| Rectangular Structures   | ✗ |
| Roads/Tracks   | ✗ |
| Quarry Hollows   | ✗ |
| Other   | ✗ |
| Nothing Found   | ✗ |
None
| No Known Geophysics   | ✓ |
| Pits   | ✗ |
| Roundhouses   | ✗ |
| Rectangular Structures   | ✗ |
| Roads/Tracks   | ✗ |
| Quarry Hollows   | ✗ |
| Other   | ✗ |
| Nothing Found   | ✗ |
None
| No Known Finds   | ✓ |
| Pottery   | ✗ |
| Metal   | ✗ |
| Metalworking   | ✗ |
| Human Bones   | ✗ |
| Animal Bones   | ✗ |
| Lithics   | ✗ |
| Environmental   | ✗ |
| Other   | ✗ |
None
| APs Not Checked   | ✓ |
| None   | ✗ |
| Roundhouses   | ✗ |
| Rectangular Structures   | ✗ |
| Pits   | ✗ |
| Postholes   | ✗ |
| Roads/Tracks   | ✗ |
| Other   | ✗ |
Entrance through outer bank on NW side, then route runs parallel with inner bank to enter interior through inner bank on W. Inner entrance faced by possible hut platform.
| 2:   | None |
| 2:   | None |
Guard Chambers:  ✗
Chevaux de Frise:  ✗
| 1. Simple Gap (North west):   | Outer entrance. |
| 2. Simple Gap (West):   | Inner entrance. |
| 2. Over-lapping (West):   | From outer entrance, route runs parallel with inner bank to enter interior through inner bank on W. |
Defined by curving inner bank and external ditch with counterscarp, and inner quarry hollow. Gap of c. 12m to outer bank and ditch.
| Area 1:   | 0.35ha. |
| Total:   | 0.35ha. |
Total Footprint Area:  0.96ha.
None
| ✗   | None |
| ✗   | None |
| NE Quadrant:   | 1 |
| SE Quadrant:   | 0 |
| SW Quadrant:   | 0 |
| NW Quadrant:   | 1 |
| Total:   | 1 |
| Partial Univallate   | ✓ |
| Univallate   | ✗ |
| Partial Bivallate   | ✗ |
| Bivallate   | ✗ |
| Partial Multivallate   | ✗ |
| Multivallate   | ✗ |
| Unknown   | ✗ |
| Partial Univallate   | ✗ |
| Univallate   | ✗ |
| Partial Bivallate   | ✗ |
| Bivallate   | ✗ |
| Partial Multivallate   | ✗ |
| Multivallate   | ✗ |
Possible stone revetment revealed on N face of inner bank.
| None   | ✗ |
| Earthen Bank   | ✗ |
| Stone Wall   | ✓ |
| Rubble   | ✗ |
| Wall-walk   | ✗ |
| Evidence of Timber   | ✗ |
| Vitrification   | ✗ |
| Other Burning   | ✗ |
| Palisade   | ✗ |
| Counter Scarp Bank   | ✓ |
| Berm   | ✗ |
| Unfinished   | ✗ |
| Other   | ✗ |
None
| None   | ✗ |
| Earthen Bank   | ✗ |
| Stone Wall   | ✗ |
| Murus Duplex   | ✗ |
| Timber-framed   | ✗ |
| Timber-laced   | ✗ |
| Vitrification   | ✗ |
| Other Burning   | ✗ |
| Palisade   | ✗ |
| Counter Scarp Bank   | ✗ |
| Berm   | ✗ |
| Unfinished   | ✗ |
| No Known Excavation   | ✓ |
| Other   | ✗ |
| ✗   | None |
| ✓   | None |
Number of Ditches:  2
| ✗   | None |
Royal Commission on the ancient and historical monuments and constructions in Wales and Monmouthshire 1913. An inventory of the ancient monuments in Wales and Monmouthshire, III, County of Radnor, No. 435, London: HMSO.
Savory, H.N. 1952: List of hill-forts and other earthworks in Wales, IV, Radnorshire, Bull Board Celtic Stud, 16, 76.
Silvester, R.J. and Hankinson, R. 2006. Defended enclosures in Radnorshire. Project report, CPAT Report 781, Welshpool: CPAT.
Atlas of Hillforts:
Wikidata:
This work is licensed under CC BY-SA 4.0 and should be cited as:
Lock, Gary and Ralston, Ian. 2024. Atlas of Hillforts of Britain and Ireland. Available at: https://hillforts.arch.ox.ac.uk
Document Version 1.1